Error -2011 makes no sense if you are 3.2E as that's generally the error code for no cIOS to install the wad and generally occurs on 3.3 systems and up. That's just my thoughts though, I'm interested to see other feedback.

I don't think updating to 3.3 will help you. You need to patch your version so it will accept wads, there's a couple of tutorials to get them working on 4.0, there was one floating about that applied to 3.4.